NWS Forecast Office Houston/Galveston, TX

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Last Map Update: Sun, Sep 13, 2026 at 9:00:17 pm CDT

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Heat Advisory

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Heat Advisory

Tonight

Extended Weather Outlook

KHGX Radar.

Hot and humid conditions persist on Monday, with high temperatures reaching the mid-to-upper 90s and peak heat indices soaring up to 109°F. A Heat Advisory is in effect from late Monday morning through early evening. Remember to practice heat safety wherever you are by staying cool, taking frequent breaks, and drinking plenty of water.

It will be another warm, muggy night as temperatures dip into the mid-70s to around 80°F inland and hold in the upper 70s to low 80s along the coast. Moisture will begin pushing back in near sunrise, bringing an increasing chance for coastal showers and thunderstorms, especially near Matagorda and Palacios.

Daily chances for showers and thunderstorms continues with decreasing chances Thursday and Friday. Highs will be mainly in the mid 90s with peak heat indices 107-110F at least through mid-week.

Current Weather Observations...

Location	Time (CDT)	Weather	Vsby. (SM)	Temp. (ºF)	Dewpt. (ºF)	Hum. (%)	Wind (mph)	Wind Chill / Heat Index (ºF)	Pres. (in)
Bryan	20:15	Clear	10	87	73	63	S 5	95 [HI]	29.98
College Station	19:53	Clear	10	87	74	65	SSE 8	95 [HI]	29.96
Caldwell	20:15	Clear	10	84	71	65	SSE 3	-	29.98
Huntsville	19:53	Clear	10	88	75	65	SE 6	98 [HI]	29.97
Navasota	20:15	Clear	10	84	78	81	S 7	94 [HI]	29.95
Brenham	20:15	Clear	10	84	73	69	SSE 5	91 [HI]	29.97
Conroe	19:53	Clear	10	86	75	69	ESE 7	95 [HI]	29.97
Cleveland	20:15	Clear	10				CALM	-	29.99
Liberty	20:15	Clear	9	78	77	94	CALM	-	29.97
Columbus	20:15	Clear	10	84	72	67	SSE 3	-	29.98
Spring	19:53	Clear	10	86	72	63	SSE 3	92 [HI]	29.96
Houston Intercontinental Aprt	19:53	Mostly Cloudy	10	88	73	61	SSE 10	96 [HI]	29.96
Katy/Brookshire	20:15	Clear	10	84	73	70	S 3	-	29.99
Texas Medical Center Heliport	20:15	Mostly Clear	10	86	75	70	S 13	95 [HI]	29.97
Sugar Land	19:53	Clear	10	84	75	74	S 6	92 [HI]	29.97
Houston Hobby Airport	19:53	Partly Cloudy	10	88	76	67	SSE 10	99 [HI]	29.97
Arcola/Sienna	20:15	Clear	10	84	78	80	SE 3	95 [HI]	29.99
Pearland	19:53	Clear	10	86	77	74	SSE 7	97 [HI]	29.99
Ellington Field	19:54	Mostly Clear	10	84	77	79	SE 8	94 [HI]	29.96
La Porte	20:15	Clear	10	86	78	79	S 9	98 [HI]	29.99
Wharton	20:15	Clear	10	78	72	80	SE 6	-	29.98
Galveston	19:52	Partly Cloudy	10	85	78	80	SSE 12	97 [HI]	29.99
Bay City	20:15	Clear	10	80	78	92	CALM	-	29.94
Palacios	19:53	Clear	10	85	74	69	ESE 9	92 [HI]	29.96
Rig 20 Miles SE of Galveston	20:15	Partly Cloudy	10	86	78	79	S 10	98 [HI]	30.00
Rig 20 Miles SE of Matagorda	20:20		10	84	78	83	SE 9	95 [HI]	30.01

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